IDT71256L70DB IDT, Integrated Device Technology Inc, IDT71256L70DB Datasheet - Page 2

• Manufacturer Part Number: IDT71256L70DB
• Manufacturer: IDT, Integrated Device Technology Inc

Specifications of IDT71256L70DB

• Density: 256Kb
• Access Time (max): 70ns
• Sync/async: Asynchronous
• Architecture: Not Required
• Clock Freq (max): Not RequiredMHz
• Operating Supply Voltage (typ): 5V
• Address Bus: 15b
• Package Type: CDIP
• Operating Temp Range: -55C to 125C
• Number Of Ports: 1
• Supply Current: 115mA
• Operating Supply Voltage (min): 4.5V
• Operating Supply Voltage (max): 5.5V
• Operating Temperature Classification: Military
• Mounting: Through Hole
• Pin Count: 28
• Word Size: 8b
• Number Of Words: 32K
• Lead Free Status / Rohs Status: Not Compliant

Pin Configurations
Pin Descriptions
IDT71256S/L
CMOS Static RAM 256K (32K x 8-Bit)
I/O
A
Name
0
GND
INDEX
0
WE
V
CS
OE
- A
I/O
CC
- I/O
NC
GND
A
A
A
A
A
A
A
14
I/O
I/O
I/O
A
A
6
5
4
3
2
1
0
0
A
A
A
A
A
A
A
A
7
14
12
0
1
2
7
6
5
4
3
2
1
0
10
11
12
13
5
9
6
8
7
14
32-Pin LCC
4 3
10
11
12
13
14
Top View
1
2
3
4
5
6
7
8
9
Top View
DIP/SOJ
15
SO28-5
16
D28-3
P28-1
D28-1
2
L32-1
17
1
18
32 31 30
19
28
27
26
25
24
23
22
21
20
19
18
17
16
15
Data Input/Output
Address Inputs
Output Enable
2946 drw 02
20
Write Enable
Description
Chip Select
26
23
29
28
27
25
24
22
21
Ground
Power
V
WE
A
A
A
A
OE
A
CS
I/O
I/O
I/O
I/O
I/O
CC
13
8
9
11
10
7
6
5
4
3
2946 drw 03
A
A
A
NC
OE
A
CS
I/O
I/O
8
9
11
10
7
6
,
,
2946 tbl 01
2
Truth Table
Absolute Maximum Ratings
NOTE:
1. Stresses greater than those listed under ABSOLUTE MAXIMUM RATINGS
Capacitance
NOTE:
1. This parameter is determined by device characterization, but is not production
NOTE:
1. H = V
P
I
C
C
V
T
T
T
Symbol
OUT
A
BIAS
STG
T
IN
I/O
TERM
Symbol
WE
may cause permanent damage to the device. This is a stress rating only and
functional operation of the device at these or any other conditions above those
indicated in the operational sections of this specification is not implied. Exposure
to absolute maximum rating conditions for extended periods may affect
reliability.
tested.
X
X
H
H
L
Military, Commercial, and Industrial Temperature Ranges
IH
, L = V
Operating
Under Bias
Storage
Power
Dissipation
DC Output Current
Terminal Voltage
with Respect
to GND
Temperature
Temperature
Temperature
V
CS
Input Capacitance
I/O Capacitance
H
L
L
L
HC
Rating
IL
, X = Don't care.
Parameter
OE
X
X
X
H
L
(1)
(T
(1)
-0.5 to +7.0 -0.5 to +7.0 -0.5 to +7.0
-55 to +125 -55 to +125 -65 to +135
-55 to +125 -55 to +125 -65 to +150
High-Z
High-Z
High-Z
A
0 to +70
D
Com'l.
I/O
D
OUT
= +25°C, f = 1.0MHz)
IN
1.0
50
Conditions
V
V
-40 to +85
OUT
IN
Ind.
1.0
= 0V
50
= 0V
Output Disabled
Standby (I
Standby (I
Read Data
Write Data
Function
-55 to +125
(1)
Mil.
Max.
1.0
50
SB1
SB
11
11
)
)
2946 tbl 02
2946 tbl 03
2946 tbl 04
Unit
pF
pF
Unit
mA
o
o
o
W
V
C
C
C